Growing community of inventors

Miyagi, Japan

Eiki Oyanagi

Average Co-Inventor Count = 3.27

ph-index = 3

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 11

Eiki Oyanagi ↔ Takeshi Sasa (2 patents)Eiki Oyanagi ↔ Osamu Morita (1 patent)Eiki Oyanagi ↔ Teiji Kohara (1 patent)Eiki Oyanagi ↔ Takehisa Ishida (1 patent)Eiki Oyanagi ↔ Hiroshi Takino (1 patent)Eiki Oyanagi ↔ Masayoshi Oshima (1 patent)Eiki Oyanagi ↔ Toshihiko Takegawa (1 patent)Eiki Oyanagi ↔ Yasuyuki Imai (1 patent)Eiki OyanagiEiki Oyanagi (3 patents)Takeshi SasaTakeshi Sasa (11 patents)Osamu MoritaOsamu Morita (65 patents)Teiji KoharaTeiji Kohara (50 patents)Takehisa IshidaTakehisa Ishida (38 patents)Hiroshi TakinoHiroshi Takino (11 patents)Masayoshi OshimaMasayoshi Oshima (9 patents)Toshihiko TakegawaToshihiko Takegawa (1 patent)Yasuyuki ImaiYasuyuki Imai (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sony Corporation (3 from 58,130 patents)

2. Nippon Zeon Company, Ltd. (1 from 598 patents)


3 patents:

1. 6068906 - Mold for making disc substrate, process for producing mold and disc

2. 6066380 - Disc medium substrate and disc device

3. 5898553 - Magnetic disk and magnetic disk unit

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idiyas.com
as of
12/29/2025
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